Lighting device



FIG. 1 is a perspective view of a lighting device showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a right end view thereof.

FIG. 5 is a left end view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The features and portions shown on the surface of the globe in broken lines form no part of the claimed design.

The broken line in the drawings is included for the purpose of illustrating environmental details and forms no part of the claimed design. 

The ornamental design for a lighting device, as shown and described. 